Update Babel to 7.9.0

Author: wojtekmaj

package.json

@@ -57,11 +57,11 @@
     "react-time-picker": "4.0.0"
   },
   "devDependencies": {
-    "@babel/cli": "^7.5.5",
-    "@babel/core": "^7.5.5",
-    "@babel/plugin-proposal-class-properties": "^7.5.5",
-    "@babel/preset-env": "^7.5.5",
-    "@babel/preset-react": "^7.0.0",
+    "@babel/cli": "^7.8.0",
+    "@babel/core": "^7.9.0",
+    "@babel/plugin-proposal-class-properties": "^7.8.0",
+    "@babel/preset-env": "^7.9.0",
+    "@babel/preset-react": "^7.9.0",
     "babel-eslint": "^10.0.0",
     "babel-jest": "^25.1.0",
     "enzyme": "^3.10.0",